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Add AP channel switch mechanism

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Build CSA settings and call the driver to perform the switch. Construct
Beacon, Probe Response, and (Re)Association Response frames both for CSA
period and for the new channel. These frames are built based on the
current configuration. Add CSA IE in Beacon and Probe Response frames.

Signed-hostap: Andrei Otcheretianski <andrei.otcheretianski@intel.com>
This commit is contained in:
Andrei Otcheretianski 2013-11-14 12:28:31 +02:00 • committed by Jouni Malinen
parent e44a384b68
commit bf281c129f
9 changed files with 317 additions and 2 deletions
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13
src/ap/hostapd.h
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@ -27,6 +27,8 @@ union wps_event_data;
struct hostapd_iface;
struct hostapd_dynamic_iface;
struct csa_settings;
struct hapd_interfaces {
int (*reload_config)(struct hostapd_iface *iface);
struct hostapd_config * (*config_read_cb)(const char *config_fname);
@ -332,6 +334,14 @@ struct hostapd_iface {
/* lowest observed noise floor in dBm */
s8 lowest_nf;
/* channel switch parameters */
int cs_freq;
u8 cs_count;
int cs_block_tx;
unsigned int cs_c_off_beacon;
unsigned int cs_c_off_proberesp;
int csa_in_progress;
#ifdef CONFIG_ACS
unsigned int acs_num_completed_scans;
#endif /* CONFIG_ACS */
@ -378,6 +388,9 @@ int hostapd_remove_iface(struct hapd_interfaces *ifaces, char *buf);
void hostapd_channel_list_updated(struct hostapd_iface *iface, int initiator);
void hostapd_set_state(struct hostapd_iface *iface, enum hostapd_iface_state s);
const char * hostapd_state_text(enum hostapd_iface_state s);
int hostapd_switch_channel(struct hostapd_data *hapd,
struct csa_settings *settings);
void hostapd_cleanup_cs_params(struct hostapd_data *hapd);
/* utils.c */
int hostapd_register_probereq_cb(struct hostapd_data *hapd,